Circle window



F. F. BEIL CIRCLE WINDOW May 16, 1939.

Filed Sept. 7, 1937 2 Sheets-Sheet l VF v w 9 .5 s; Q a a M J 7 2 3 4 J4 4 4 M 6 w 4% g f 0 3 J F 2 q a W W M, fbfio v a WWW x M? ma 4 ii w J mw y 1939- F. F. BEIL 2,158,395

CIRCLE WINDOW Filed Sept. '7, 1937 2 SheetsSheet 2 Patented May 16, 1939UNITED STATES CIRCLE WINDOW Forrest F. .Beil, Clinton, Iowa, assignorCurtis Companies Incorporated, Clinton, Iowa, a. corporation of IowaApplication September 7, 1937, Serial No. 162,722

11 Claims.

One object of my present inventionis to provide a circle window ofsimple and inexpensive construction which has the desirable ieaturerofbeing openable without the necessity of providing a recess in the walladjacent the window frame to receive the sash of the window.

Another object is to provide a circle window in which there are a pairof semi-circular sashes, one of which is fixed and the other of whichisrotatable so that it can assume either a closed position oppositethefixed sash or an open position when rotated to register with thefixed sash;

Another object is to provide a circle window in which the movable sashis guided in its movement by a combined guide means and weather striparranged annularly of the window frame.

still another object is to provide the two sashes with meeting rails,one ofwhich' has a convex portion and the other of which hasa weatherstrip extending therealong and adapted to engage the convex portion andthus seal the joint between the meeting rails against air infiltrationwhen the movable sash is in closed position, the convex portion servingto prevent distortion-of the weather strip as the movable sash, duringthe closing operation thereof, approaches closed position.

A further object is to provide a combined clamping and supporting boltfor the movable sash, which predetermines its path of rotary movementand which can be utilized to urge the meeting rails to bend toward eachother, thus providing frictional engagement of sufficient magnitudebetween the movable sash and its guide means to lock the window in anydesired position of adjustment.

A further object is to provide a circular window frame built up oflagging, the sections of which are so formed that the fixed sash issupported against movement, due to a distinctive shape of one section ofthe lagging and retained in position by a semi-circular blind stop whichcan be sprung into position in a groove especially provided therefor byanother section of lagging of distinctive shape.

Still a further object is to provide an outer casing for the framehaving joints which are eiiectively protected against the weather byrabbeted key blocks and which is of such internal diameter that itpermits insertion of a screen having a circular frame to a positionlimited partially by the blind stop mentioned in the preceding objeotand partially by the section of lagging in which the blind stop ismounted.

With these and other objects invlew my invention consists in theconstruction, arrangement and combination of the'various parts of mydevice, whereby the objects contemplated are attained as hereinaftermore fully setforth, pointed out inmy claims and illustrated in theac'com- 5 panying drawings, in which:

Figure 1 is a vertical sectional view througha circle window embodyingmy invention and showing a screen mounted therein.

Figure'Z is a horizontal sectional view on line 2--2 of Figure 1,showing the frame mounted in the wall of a frame house.

Figure 3 is a sectional view similar to Figure 1 showing :the framearranged for application to a brick or masonry wall. 15

Figure 4 is an outside elevational view of a circle-window, one oithekey blocks being removedand only a small section of the screen beingshown in position. I

Figure 5 is a sectional view on line 5-5 of Figure 1 showing asemi-circular blind stop for the upper sash of my window; and

Figure 6 is a sectional view on line 15-6 of Figure 1 showing how theupper sash is mounted and supported in the frame of the window. 25

On the accompanying drawings I have used the reference numeral III toindicate an outer casing member. The member Hlis formed of severalsections, the joints between which are indicated at H. These joints maybe glued anddoweled to-: gether in the *usual manner, the dowels beingindicated'atrll. I r

The iram'eiof the window is made of annular piecesor ringsof laggingindicatedat l3, [4, I5, l6iand II, respectively. The shape of the ringof lagging I3 is shown in Figure 5. It comprises a lower :half having aninner surface of a predetermined radius, such'suriace being indicated ati8: This surface is cut-away as at H! adjacent the lower part thereof toprovide a sloping sill for waterdrainage, as willhereinafter appear. Theupper half of the ring is formed at a relatively larger. radiusindicated at 29. The purpose of this arrangement'is so thata'semi-circular blind stop 2| may be mountedandsupported therein.Support of the'blind stop is securedlby shoulders 22 which form thetransitions from the radius l8 to the radius 20.; The blind stop, asindicated bydottedlines, may-first havelone I end inserted in position,whereupon the dotted 50 end may then be sprung on to its shoulder 22 andthe blind stop will thereafter remain in this position;

The blind stop 2| normally retains an upper sashUS in position in thewindow frame but may be sprung out of the position shown by full lineswhen it is desired to remove the sash US from the window frame. Theupper sash US includes a bottom rail 23, a semi-circular stile 24 andradial mullions 25.

As shown in Figure 6 the ring I4 is provided with a lower half of aradius indicated at |8a and an upper half having a radius indicated at20a. This provides shoulders 22a, the same as in the case of the ring[3. It will be noted by referring to Figure 1 that the radius at 20 isslightly larger than the radius at 20-11, while the internal radius ofthe outer casing I0 is substantially the same as the radius 20a.Accordingly, when the rings of lagging forming the window frame arefastened together, the upper sash US can be inserted through the membersIn and I3 to its position in the ring l4. Its inner face will then restagainst the ring [5 which, it will be noted, has a smaller inside radiusthan the radius 20a of the ring I4. Thereafter when the blind stop 2| issprung into position, the sash US is effectively supported and normallyretained in its desired position but can subsequently be removed ifnecessary for repair or replacement.

I provide a lower sash LS having an upper rail 23a, a semi-circularstile 24a and radial mullions 25a. The lower sash LS is provided with aperipheral groove 26 for guiding and weatherstripping purposes. Mountedin this groove is an inwardly directed flange 2'! of an annular weatherstrip W. The weather strip W may be made of bronze or any suitableresilient and rust-proof metal and is annular in formation. It hasattaching flanges 28 and 29 which may be fastened as by nails 30 to thelagging rings l5-and l6. During assembly the circular weather strip W isarranged in the groove 26 of the lower sash LS before the lower sash isplaced in position in the frame. Before the circular inside stop 3| ismounted in the frame, the weather strip W together with the lower sashLS are inserted through the rings l6 of the flange 28 rests against thefixed upper sash US. The lower part of the fiange'29 is aligned with thejoint between the lagging rings l4 and IS. The nails 30 are then driveninto position, the lower sash LS being rotated during this operation topermit progressive access to the full circumference of the weather stripW.

A clamp bolt 32 is mounted through the rails' 23 and 23a and providedwith a wing nut 33. This clamp bolt, as shown in Figure 2, is effectiveto urge the rails 23 and 23a towards each other at their center, thusslightly bowing them and producing suificient friction between the endsofthe rail 23a'and the guide and weather strip W to prevent undesiredrotation of the lower sash LS. When the wing nut 33 is released, thelower sash can be readily rotated a half turn to open position orreturned to closed position, as desired. For convenience in the openingand closing operations, I provide a knob 34 substantially spaced fromthe center of rotation.

The rail 23a of the lower sash has a convex molding 35 extendingthroughout its length. Secured to the rail 23 of the upper sash is aweather strip W of resilient bronze or the like.

The weather strip W comprises an elongated leaf anchored as by means ofnails 36 along one side edge thereof, the free side of the leafresiliently engaging the convex molding 35 when the lower sash is inclosed position. At the center of the weather strip W a perforation 37is and I1 until the outer edge provided for the clamp bolt 32. Thecoaction of the weather strip W and the molding is such that anefiective seal against infiltration of air and water is providedwhenever the window is in closed position.

The resilience of the weather strip W will permit the bending of therails 23 and 23a, as shown in Figure 2, yet maintaining the weather sealcontact between the weather strip W and the molding 35. Due to theconvexity of the molding 35, the lower sash LS may be rotated from anopen to a closed position without distorting the weather strip W. Whenthe outer edge of the molding 35 engages the weather strip, it graduallyand progressively springs the weather strip toward the rail 23 andfinally permits full line contact between the elements W and 35 adjacentclosed position of the lower sash.

In Figures 1 and 4 I illustrate the window frame as being mounted in awall 38 of a frame house. I provide key blocks 39 which serve the doublepurpose of the usual ornamentation for circle window frame casings andprotect the joints H of the circular casing [0 from the weather. Irabbet the backs of the key blocks, as indicated at 40, so that they fitover the outer edge of the casing l3 instead of being mortised into itas in the usual construction. Thus the key blocks provide a protectivecover for the joints and can be neatly mounted on the casing 10.

Where my window frame is to be used in a brick or masonry wall, asindicated at 4! in Figure 3, the key blocks 39 are omitted and acircular molding 42 substituted. The lagging ring I4 is also providedwith a portion out at a radius indicated at la in Figure 1. This portionand the portion M of the ring !3 provide a sloping sill for permittingdrainage of water from within the window frame outwardly on to thecasing l0 and finally down the outside of the house.

Within thecasing HI I mount a screen S, the frame of which is indicatedat 43. The screen engages the stop 2| and also the ring l3 adjacent itsradius l8, whereby the stop and ring serve as a screen stop. The screenmay be held in position by any suitable means, such as hooks 4 and eyes45 at the sides of the screen and window frame. The lagging ring I!serves as a plaster reception groove to interlock the whole frame in thewall. An inner circular molding 46 serves as an inner casing for thecircle window. In addition to the clamp bolt 32 a look (not shown) canbe provided, spaced from the center of rotation, if desired.

I have provided a circle window frame which has many advantages ofconstruction and assembly from a manufacturing standpoint. At the sametime the fixed sash is effectively supported and retained in positionand the movable sash is arranged for ready adjustment. The jointsbetween the sashes and between the movable sash and the frame areefiectively sealed against infiltration of air. These joints are suchthat the movable sash can be made substantially smaller than the frame,thereby providing sufiicient play to eliminate the possibility of themovable sash swelling and binding in the frame. The parts of thestructure are so arranged that installation of the window frame and ofthe sashes in the frame is a comparatively simple and easy matter.

T, Some changes may be made in the construction and arrangement of theparts of my device without departing from the real spirit and purpose ofmy invention, and it is my intention to cover by my claims any modifiedforms of structure or use of mechanical equivalents which may bereasonably included within their scope.

I claim as my invention:

1. In a circle window, a circular frame having in one vertical planethereof a lower half of predetermined radius and an upper half of arelatively greater radius, a semi-circular upper sash in said upper halfof said frame and supported at the ends of its bottom rail on theshoulders of the frame which are provided by the transition of the framefrom said lower half of one radius to said upper half of greater radiusand a semicircular lower sash supported in said frame in a second planespaced from said first plane.

2. In a circle window, a circular frame having in each of two verticalplanes thereof spaced from each other, a lower half of predeterminedradius and an upper half of relatively greater radius, a semi-circularupper sash in said upper half and supported on the shoulders formed bytransition of said frame in one of said planes from one radius to theother and a semi-circular blind stop in the upper half of said frame andsupported on the shoulders formed by transition of said frame from oneradius to the other in the second of said planes.

3. In a circle window, a circular frame having in one vertical planethereof a lower half of predetermined radius and an upper half of arelatively greater radius, a semi-circular upper sash in said upper halfof said frame and supported on shoulders of the frame which are formedby transition of the frame from said lower half to said upper half ofgreater radius and a semi-circular lower sash supported in said frame ina second plane spaced from said first plane, said lower sash having agrooved periphery, a circular weather strip arranged around the innersurface of said frame and having an inwardly projecting flange receivedin said groove and thereby guiding said lower sash in its circularadjustment to open and closed positions.

4. In a window of the character described, a circular frame having inone vertical plane thereof a lower half and an upper half of relativelydifferent radii, a semi-circular upper sash in one of said halves ofsaid frame and having the corners thereof engaging shoulders of theframe which are formed by transition of the frame from one of said radiito the other to prevent rotation of said sash relative to said frame anda second semicircular sash supported in said frame in a second planespaced from said first plane.

5. In a window of the character described, a circular frame having intwo vertical planes spaced from each other, a lower half ofpredetermined radius and an upper half of a different radius than thelower half, a semi-circular sash in said frame and engaging shouldersformed by transition of said frame in one of said planes from one radiusto the other and a semi-circular blind stop in the said frame andengaging shoulders formed by transition of said frame from one radius tothe other in the second of said planes.

6. In a window of the character described, a circular frame having inone vertical plane thereof a lower half and an upper half of relativelydifferent radii, a semi-circular upper sash in one of said halves ofsaid frame and having the corners thereof engaging shoulders of theframe which are formed by transition of the frame from one of said radiito the other to prevent rotation of said sash relative to said frame anda second semi-circular sash supported in said frame in a second planespaced from said first plane, said second sash having a groovedperiphery, a circular weather strip arranged around the inner surface ofsaid frame and having an inwardly projecting flange received in saidgroove and thereby guiding said second sash in its circular adjustmentto open and closed positions and sealing the periphery thereof againstair infiltration.

7. In a window of the character described, a circular frame having inone vertical plane thereof a lower half and an upper half of relativelydifferent radii, a semi-circular upper sash in one of said halves ofsaid frame and having the corners thereof engaging shoulders of theframe which are formed by transition of the frame from one of said radiito the other to prevent rotation of said sash relative to said frame anda second semi-circular sash supported in said frame in a second planespaced from said first plane, said second sash having a groovedperiphery, annular guide means around the inner surface of said frameand having an inwardly projecting flange received in said groove andthereby guiding said second sash in its rotary adjustment to open andclosed positions, and a clamp bolt extending through said sashes at thecenter of rotation of said movable sash.

8. In a circle window, a circular frame having a lagging ring in onevertical plane thereof having a lower half of predetermined radius andan upper half of a relatively greater radius, a semicircular sash insaid frame, a semi-circular blind stop for said sash supported at theends of its bottom rail on the shoulders of the frame which are providedby the transition of the frame from said lower half of one radius tosaid upper half of greater radius, a screen supported in said frame,said blind stop and the lower half of said lagging ring engaging saidscreen to limit inward movement thereof relative to said frame and meansto retain said screen in engagement therewith.

9. In a circle window, a circular frame having an outer casing memberformed of sections with the ends thereof joined together and key blockshaving rabbeted portions overlying the joints between said sections.

10. In a circle window, a circular frame having a lagging ring in onevertical plane thereof provided with a lower half of predeterminedradius and an upper half of a relatively greater radius, a semi-circularsash in said frame and a semicircular blind stop for said sash supportedat the ends of its bottom rail on the shoulders of the frame which areprovided by transition of the frame from said lower half of one radiusto said upper half of greater radius.

11. In a circle window, a circular frame having in one vertical planethereof, a lower half of predetermined radius and an upper half of arelatively greater radius, a semi-circular upper sash in said upper halfof said frame and supported at the ends of its bottom rail on theshoulders of the frame which are provided by the transition of the framefrom said lower half of one radius to said upper half of greater radius,a semi-circular lower sash in said frame on a second plane spaced fromsaid first plane and a bolt through the lower rail of said upper sashand through the upper rail of said lower sash to support the lower sashfrom the upper sash on said shoulders when the lower sash is in openposition.

FORREST F. BEL.

